PART 5: OPERATOR TROUBLESHOOTING
(Cont.)
5.5 Troubleshooting Guide
Refer to the troubleshooting guide below to help diagnose and resolve a dishwasher problem.
CONDITION
CAUSE
SOLUTION
Machine will not start
Door not closed .....................................
Make sure door is fully closed
when POWER button
Main switch off .....................................
Check disconnect at main panel
is pushed.
Check machine power switch
Power LED is off.
Machine circuit breaker behind ............
Remove lower front panel and
lower front panel is tripped
reset breaker at left lower corner
of machine.
Door safety switch not closed ...............
Check magnet on left side of door
Control cabinet pulled out ....................
Make sure slide-out control cabinet
is fully closed and secured.
Push POWER button again ...................
Machine starts, if NOT, contact
service agent
Low or no water
Main water supply is turned off ............
Turn on main water supply
on initial fill or
Fill hose (rear of machine) kinked ........
Make sure hose has smooth bends
during automatic
Fill time not set correctly ......................
UH-100B, UH-100, UL-100 Only,
cycle
Contact service agent
Low water supply flow pressure ...........
Increase flowing pressure
20-22 PSI [138-151kPa]
for UH-200B, UH-200
25-95 PSI [156-656 kPa] for
UH-100B, UH-100, UL-100
Faulty fill/rinse valve ............................
Contact service agent
Clogged line strainer .............................
Clean strainer screen/replace strainer
Faulty water supply valve .....................
Replace water supply valve
Water supply line too small ..................
Increase water supply line to 3/4" I.D.
Machine will not run
Door not closed .....................................
Make sure door is fully closed
when START button
Door safety switch not closed ...............
Check magnet on left side of door
is pushed.
Control cabinet pulled out ....................
Make sure slide-out control cabinet
Power LED is on.
is fully closed and secured.
Push START button again ....................
Machine starts, if NOT, contact
service agent
Machine runs when
Motor thermal overload tripped ............
Remove round scrap screen and
START button is
check sump and pump strainer,
pushed but pump
clear possible obstruction and
motor is not running
wait 10 mins. for overload to reset
Defective motor ....................................
Contact service agent
Part 5:
OPERATOR TROUBLESHOOTING
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